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Hydrological processes in macrocatchment water harvesting in the arid region of Tunisia: the traditional system of tabias

Nasri, S; Albergel, J; Cudennec, C and Berndtsson, Ronny LU (2004) In Hydrological Sciences Journal 49(2). p.261-272
Abstract
In arid Tunisia, a tabia system is a traditional macrocatchment water harvesting system. It consists of a runoff area, which occupies two thirds of the slope arid is traditionally used for grazing; and one to five cropped plots within U-shaped soil banks arranged in a cascade in the third downstream area. These "run-on" areas accumulate and store the occasional runoff. Each soil bank is constructed with a discharge weir that allows modification of the flooded area and discharge of excess water towards downstream plots. Such a harvesting system, located in an area with 140 turn annual rainfall, was instrumented during four hydrological years (1995-1999) and 45 rainfall events were recorded. Eleven of these events gave a measurable inflow to... (More)
In arid Tunisia, a tabia system is a traditional macrocatchment water harvesting system. It consists of a runoff area, which occupies two thirds of the slope arid is traditionally used for grazing; and one to five cropped plots within U-shaped soil banks arranged in a cascade in the third downstream area. These "run-on" areas accumulate and store the occasional runoff. Each soil bank is constructed with a discharge weir that allows modification of the flooded area and discharge of excess water towards downstream plots. Such a harvesting system, located in an area with 140 turn annual rainfall, was instrumented during four hydrological years (1995-1999) and 45 rainfall events were recorded. Eleven of these events gave a measurable inflow to at least one of the four plots. The observations showed that the traditional tabia system reduced total surface runoff from the catchment to essentially zero. The harvesting system significantly reduced peaks of surface runoff within the catchment, which also reduced erosion hazards. The cultivated area of about 5% of the total catchment could be supplied by a harvested water amount corresponding to about seven times the amount of each rainfall event larger than 20 mm. (Less)
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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
surface runoff, arid zone, water harvesting, North, tabia system, Africa, Tunisia
in
Hydrological Sciences Journal
volume
49
issue
2
pages
261 - 272
publisher
IAHS Press
external identifiers
  • wos:000220582600005
  • scopus:2142701102
ISSN
0262-6667
language
English
LU publication?
yes
id
00685eba-1c54-4706-bc1a-ca8b476a511a (old id 282971)
date added to LUP
2007-10-29 08:34:49
date last changed
2017-01-01 06:54:49
@article{00685eba-1c54-4706-bc1a-ca8b476a511a,
  abstract     = {In arid Tunisia, a tabia system is a traditional macrocatchment water harvesting system. It consists of a runoff area, which occupies two thirds of the slope arid is traditionally used for grazing; and one to five cropped plots within U-shaped soil banks arranged in a cascade in the third downstream area. These "run-on" areas accumulate and store the occasional runoff. Each soil bank is constructed with a discharge weir that allows modification of the flooded area and discharge of excess water towards downstream plots. Such a harvesting system, located in an area with 140 turn annual rainfall, was instrumented during four hydrological years (1995-1999) and 45 rainfall events were recorded. Eleven of these events gave a measurable inflow to at least one of the four plots. The observations showed that the traditional tabia system reduced total surface runoff from the catchment to essentially zero. The harvesting system significantly reduced peaks of surface runoff within the catchment, which also reduced erosion hazards. The cultivated area of about 5% of the total catchment could be supplied by a harvested water amount corresponding to about seven times the amount of each rainfall event larger than 20 mm.},
  author       = {Nasri, S and Albergel, J and Cudennec, C and Berndtsson, Ronny},
  issn         = {0262-6667},
  keyword      = {surface runoff,arid zone,water harvesting,North,tabia system,Africa,Tunisia},
  language     = {eng},
  number       = {2},
  pages        = {261--272},
  publisher    = {IAHS Press},
  series       = {Hydrological Sciences Journal},
  title        = {Hydrological processes in macrocatchment water harvesting in the arid region of Tunisia: the traditional system of tabias},
  volume       = {49},
  year         = {2004},
}